Home / 12,839.22-19,257.78-3,479.67

Finding the Fourth Proportional to 12,839.22, 19,257.78 and 3,479.67

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Solution

The fourth proportional to 12,839.22, 19,257.78 and 3,479.67 is: 5,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.22 : 19,257.78 = 3,479.67 : x
  2. Step 2: Convert to fraction form
    12,839.22/19,257.78 = 3,479.67/x
  3. Step 3: Cross multiply
    12,839.22x = 19,257.78 × 3,479.67
  4. Step 4: Simplify right side
    12,839.22x = 67,010,719.33
  5. Step 5: Solve for x
    x = 67,010,719.33/12,839.22
  6. Step 6: Final answer
    x = 5,219.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.